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Calculate last day of month in JavaScript

If you provide 0 as the dayValue in Date.setFullYear you get the last day of the previous month: 20 Answers ...
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Returning value from called function in a shell script

... echo >&2 "successfully acquired lock: $lockdir" retval=0 else echo >&2 "cannot acquire lock, giving up on $lockdir" retval=1 fi return "$retval" } testlock retval=$? if [ "$retval" == 0 ] then echo "directory not created" else echo ...
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Javascript regex returning true.. then false.. then true.. etc [duplicate]

... /^[^-_]([a-z0-9-_]{4,20})[^-_]$/gi; You're using a g (global) RegExp. In JavaScript, global regexen have state: you call them (with exec, test etc.) the first time, you get the first match in a given string. Call them again and you get...
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How to iterate a loop with index and element in Swift

... Yes. As of Swift 3.0, if you need the index for each element along with its value, you can use the enumerated() method to iterate over the array. It returns a sequence of pairs composed of the index and the value for each item in the array. For...
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Gradient borders

...webkit-border-image: -webkit-gradient(linear, left top, left bottom, from(#00abeb), to(#fff), color-stop(0.5, #fff), color-stop(0.5, #66cc00)) 21 30 30 21 repeat repeat; Prooflink -- http://www.webkit.org/blog/1424/css3-gradients/ Browser support: http://caniuse.com/#search=border-image ...
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Change URL parameters

...ed Sujoy's code to make up a function. /** * http://stackoverflow.com/a/10997390/11236 */ function updateURLParameter(url, param, paramVal){ var newAdditionalURL = ""; var tempArray = url.split("?"); var baseURL = tempArray[0]; var additionalURL = tempArray[1]; var temp = ""; ...
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How to use shared memory with Linux in C

...lains their purpose. return mmap(NULL, size, protection, visibility, -1, 0); } The following is an example program that uses the function defined above to allocate a buffer. The parent process will write a message, fork, and then wait for its child to modify the buffer. Both processes can read a...
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How do I detect the Python version at runtime? [duplicate]

...check that you are running Python 3.x, use import sys if sys.version_info[0] < 3: raise Exception("Must be using Python 3") Here, sys.version_info[0] is the major version number. sys.version_info[1] would give you the minor version number. In Python 2.7 and later, the components of sys.ve...
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How to remove an element slowly with jQuery?

... answered Nov 27 '09 at 7:09 GregGreg 7,18077 gold badges3939 silver badges6464 bronze badges ...
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Convert date to datetime in Python

... 10 Answers 10 Active ...